Bedrock Tortoise is a rare Creature — Turtle card from The Lost Caverns of Ixalan Promos (PLCI), collector number 176p. Current market price: $2.26 (foil $5.51), TCGplayer market prices via Scryfall.
During your turn, creatures you control have hexproof. Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power.